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Interaction Check

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Selected Drugs Clear All

  • remove Cerebyx
    fosphenytoin
  • remove clobazam
    generic
  • remove Qudexy XR
    topiramate
  • remove rufinamide
    generic

multicheck MultiCheck Results - 6 Interactions

Smiley face Smiley face

Monitor/Modify Tx

Smiley face Smiley face Cerebyx (fosphenytoin) + clobazam (generic)

Monitor/Modify Tx


fosphenytoin + clobazam

monitor respiratory rate: combo may incr. clobazam active metabolite levels, risk of CNS and respiratory depression, psychomotor impairment, other adverse effects (hepatic metabolism induced, incr. active metabolite formation, additive effects)

Smiley face Smiley face Cerebyx (fosphenytoin) + Qudexy XR (topiramate)

Monitor/Modify Tx


fosphenytoin + topiramate

monitor phenytoin levels: combo may incr. phenytoin levels, risk of toxicity; may decr. topiramate levels, efficacy; may incr. risk of CNS depression, psychomotor impairment (hepatic metabolism inhibited; hepatic metabolism induced; additive effects)

Smiley face Smiley face Cerebyx (fosphenytoin) + rufinamide (generic)

Monitor/Modify Tx


fosphenytoin + rufinamide

monitor phenytoin levels: combo may incr. phenytoin levels, risk of toxicity; may decr. rufinamide levels, efficacy; may incr. risk of CNS depression, psychomotor impairment (mechanism unknown; hepatic metabolism induced; additive effects)

Smiley face Smiley face clobazam (generic) + Qudexy XR (topiramate)

Monitor/Modify Tx


clobazam + topiramate

monitor respiratory rate: combo may incr. clobazam and active metabolite levels, risk of CNS and respiratory depression, psychomotor impairment, other adverse effects (hepatic metabolism inhibited, additive effects)

Smiley face Smiley face clobazam (generic) + rufinamide (generic)

Monitor/Modify Tx


clobazam + rufinamide

monitor respiratory rate: combo may incr. risk of CNS and respiratory depression, psychomotor impairment (additive effects)

Caution Advised

Smiley face Smiley face Qudexy XR (topiramate) + rufinamide (generic)

Caution Advised


topiramate + rufinamide

caution advised: combo may incr. risk of CNS depression, psychomotor impairment (additive effects)

Additional Considerations

Smiley face Smiley face topiramate in Qudexy XR

beverages or products containing ethanol are contraindicated within 6h of topiramate extended-release (ER) capsules administration; combo may incr. topiramate release rate, levels, risk of adverse effects, decr. duration of efficacy

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